From d19b69eeeb0c24ee7e4a75b0da32eefba1d43928 Mon Sep 17 00:00:00 2001
From: Joris
Date: Mon, 4 Apr 2016 23:59:23 +0200
Subject: Begin cumulative income at first payment and not before

---
 src/client/elm/LoggedIn/Home/Model/Payer.elm | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/client/elm/LoggedIn/Home/Model/Payer.elm b/src/client/elm/LoggedIn/Home/Model/Payer.elm
index aabe50a..be40ffa 100644
--- a/src/client/elm/LoggedIn/Home/Model/Payer.elm
+++ b/src/client/elm/LoggedIn/Home/Model/Payer.elm
@@ -40,9 +40,16 @@ getOrderedExceedingPayers currentTime users incomes payments =
           |> mapValues .preIncomePaymentSum
           |> Dict.toList
           |> exceedingPayersFromAmounts
-  in  case incomeDefinedForAll (Dict.keys users) incomes of
-        Just since ->
-          let postPaymentPayers = mapValues (getPostPaymentPayer currentTime since) payers
+      firstPaymentTime =
+        payments
+          |> List.map (Date.toTime << .creation)
+          |> List.sort
+          |> List.head
+      incomesForAllTime = incomeDefinedForAll (Dict.keys users) incomes
+  in  case (firstPaymentTime, incomesForAllTime) of
+        (Just paymentTime, Just incomeTime) ->
+          let since = max paymentTime incomeTime
+              postPaymentPayers = mapValues (getPostPaymentPayer currentTime since) payers
               mbMaxRatio =
                 postPaymentPayers
                   |> Dict.toList
@@ -56,7 +63,7 @@ getOrderedExceedingPayers currentTime users incomes payments =
                     |> exceedingPayersFromAmounts
                 Nothing ->
                   exceedingPayersOnPreIncome
-        Nothing ->
+        _ ->
           exceedingPayersOnPreIncome
 
 getPayers : Time -> Users -> Incomes -> Payments -> Payers
-- 
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